A fluid flow monitoring and management device that includes a fluid flow body having a magnet and a sensor secured to the fluid flow body. The sensor includes a magnetometer in a signal relationship with the magnet.

Differential pressure airflow sensor devices are disclosed. Disclosed are sensor devices for mounting on a fixed resistance having a low-pressure probe for extending through the fixed resistance from a housing and a high-pressure inlet to the housing. Disclosed are sensor devices having a plurality of pressure transducers.

An exemplary air filter may include an air-permeable filter body for cleaning air, and a filter housing for holding the filter body. The air filter may also include a clean-air port fluidically connected to the filter body and mechanically connected to the filter housing for attaching the air filter to a clean-air channel. The air filter may further include a first air-flow grid arranged in the clean-air port to stabilize the filtered air.

A flow meter has fluid flow through a measurement path in a measuring tube with a main channel and at least one secondary channel. A signal input device introduces a measurement input signal into the fluid and a signal detection device detects the measurement input signal and/or a response signal induced by the measurement input signal. For a predetermined fluid, the main and secondary channels with a first total throughput of the fluid per unit time and with a second total throughput of the fluid per unit time, which is greater than the first total throughput of the fluid per unit time. The ratio of the throughput through all the secondary channels to the throughput through the main channel is greater in the second total throughput than in the first total throughput of the fluid per unit time.

A flow member (200) is for a flow assembly (100) of a pressure support system (2). The pressure support system includes a patient interface device (6), a flow generator (4), and a coupling conduit (8). The flow assembly includes a cover (102) and a sensing assembly (110). The sensing assembly has a flow sensor (114) having flow sensing components (118,120). The flow member comprises: a body (202) comprising: a mounting portion (204) connected to the cover, thereby enclosing the sensing assembly, a gas conduit (206) at least partially overlaying the mounting portion, the second conduit fluidly coupling the first conduit to the flow generator, and a number of flow conduits (208,210) each extending transverse to the gas conduit (206) and receiving a corresponding flow sensing component. Each flow conduit terminates at a distal end portion (209,211) in fluid communication with the gas conduit (206), each distal end portion being spaced a distance from the gas conduit (206) and located internal with respect thereto.

Differential pressure airflow sensor devices are disclosed. Disclosed are sensor devices for mounting on a fixed resistance having a low-pressure probe for extending through the fixed resistance from a housing and a high-pressure inlet to the housing. Disclosed are sensor devices having a plurality of pressure transducers.

A method for carrying out an integrity test on a filter element includes filling a fluid into at least one vessel (1), in which a filter element (F) to be tested is arranged. The method proceeds by setting the pressure of the fluid in the vessel (1) to a predetermined test pressure, and maintaining the test pressure in the vessel (1) with controlled replenishment of fluid into the vessel (1) and/or a controlled change in internal volume of the vessel (1). The method continues by determining an integrity characteristic variable for the filter element (F) in a manner dependent on the controlled replenishment of fluid into the vessel (1) and/or dependent on the controlled change in internal volume of the vessel (1) before attaining a substantially continuous volume flow of fluid for maintaining the specific test pressure in the vessel (1).

Particle traps and meters fitted with particle traps are described for removing particles from a gas flowing through a gas meter, for example, removing particles from a gas flowing through an ultrasonic gas meter serving a domestic property. In one example, the particle trap has a body which defines a space defined by first and second portions of the body and housing a filter, an inlet through which gas can enter the space, and an outlet through which the gas can exit the space. The inlet and outlet are defined in the first portion and second portion is spaced away from the outlet.

This invention relates to a surgical smoke evacuation system for use in removing gases and smoke created in surgical procedures form within an insufflated surgical cavity. Such a system comprises a discharge assembly adapted to form a gases path, and having an end which in use is located within said surgical cavity so that gases and/or surgical smoke inside said cavity can pass out of said cavity and through said discharge assembly along said gases path, a flexible discharge limb having an operational site end and an outlet end, and a self-supporting wall defining a gases flow passage between said operational site end and said outlet end, in use said open operational site end sealingly connected to said discharge assembly so that said gases and/or surgical smoke can pass out of said discharge assembly and into said discharge limb, a filter connected in use to the outlet end of the discharge limb, at least part of said wall of the discharge limb formed from a breathable material, said breathable material allowing the passage of water vapour through the wall of the discharge limb without allowing the passage of liquid water or surgical smoke or other gases.

A fluid governing system including a fluid inlet and fluid inlet port coupleable to an upstream pipe segment; a fluid outlet and a fluid outlet port coupleable to a downstream pipe segment; a flow unit; a metering inlet path in flow communication with the fluid inlet; a metering outlet path in flow communication with the fluid outlet, the metering inlet path is in flow communication with the metering outlet path through the flow unit which is articulable between the metering inlet path and the metering outlet path; a pressure responsive sealing diaphragm for selective sealing a metering inlet port; an inlet chamber disposed at a face of the sealing diaphragm, the inlet chamber in flow communication with the fluid inlet; a control chamber disposed at an opposite face of the sealing diaphragm; and a control fluid duct extending between the inlet chamber and the control chamber.